ltjdlow



FFC.

W. D. LUDLOW, OF NENV YORK, N. Y.

REFRIGERATOR.

Specication of Letters Patent No.

To all whom 'it may concern:

Be it known that I, VILLIAM D. LUDLow, of the city, county, and State ofNew York, have invented a new and useful Improvement in Water-Coolersand Refrigerators; and I hereby declare the following to be a full andexact description of the same, reference being had to the accompanyingdrawing, making part of this speciicatiomwhich represents a verticalsection of an ice-pitcher embodying my improvement.

My invention consists in a provision for the longer preservation of ice,which object is accomplished by hermetically sealing the ice chamber soas to prevent the passage of air or water into or out of it.

In the present illustration of my invention, A, represents the outercontaining chamber for water &c.

B, is an inner chamber rising vertically from the floor of the formerand employed to contain ice. The mouth of the chamber B, is hermeticallyclosed by means of an annular india rubber gasket E, and a lid F, thelatter being secured by a button or key D, pivoted to its center andengaging with lugs C, C.

Instead of water, the outside chamber may contain fruit, provisions orany other matter to be kept cool.

As applied to a water cooler this invention possesses the greatadvantage of pre- 19,373, dated February 16, 1858.

venting any impurities in the ice from mingling with the waterandrendering it also impure. In like manner milk, cream or any otherarticle may be effectually cooled without weakening or adulterationfromthe melted ice. 4A cheap and inferior ice may be used for any of theabove purposes.

It is also a great saver of ice. I have found that of two similarchambers, one containing ice being sealed up in the manner described andthe other containing ice and water being not sealed but covered; theformer contained a portion of unmelted ice thirty hours while the ice inthe latter had entirely melted in nine hours, the difference beingattributable to circulation of atmospheric air in the unsealed chamber,which was prevented in that which was sealed.

I claim as new and of my invention here- 1n The provision, substantiallyas described of a hermetically closed or sealed ice reservoir within orin connection with a vessel containing water or any other matter to becooled or kept cool.

In testimony of which invention I hercunto set my hand.

W. D. 'LUDLoW litnesses GEO. H. KNIGHT, JOI-IN H. PIATT.

